My NexStar SE wobbles when I put it on the tripod. How can I fix this?

The NexStar SE tripod and mount are attached to one another by three bolts that are part of the tripod assembly. In order to make assembly easier, especially in the...

My NexStar SE wobbles when I put it on the tripod. How can I fix this?

The NexStar SE tripod and mount are attached to one another by three bolts that are part of the tripod assembly. In order to make assembly easier, especially in the...

What are celestial coordinates, and why are they important?

From our point of view on Earth, the sky is a sphere. If you stretch out or project the geographical coordinates of Earth into space, a gridwork of celestial coordinates...

What are celestial coordinates, and why are they important?

From our point of view on Earth, the sky is a sphere. If you stretch out or project the geographical coordinates of Earth into space, a gridwork of celestial coordinates...

Where do I find infrared (IR) and ultraviolet (UV) transmission and refl...

We don’t have the data for regions outside the visible spectrum, since our products are marketed for amateur astronomy.Please go to any Celestron Optical Tubes page, choose any scope and...

Where do I find infrared (IR) and ultraviolet (UV) transmission and refl...

We don’t have the data for regions outside the visible spectrum, since our products are marketed for amateur astronomy.Please go to any Celestron Optical Tubes page, choose any scope and...

What can I see with a telescope, can I see in color?

Your telescope will open up many worlds for you. Here is a quick sample of what’s possible for you to see when looking at the sky or the Earth with...

What can I see with a telescope, can I see in color?

Your telescope will open up many worlds for you. Here is a quick sample of what’s possible for you to see when looking at the sky or the Earth with...

My Celestron mount slews in the wrong direction. Is this an encoder prob...

It could be an encoder problem. The encoder is a light-emitting diode (LED) device that measures how much the motor has turned. Try this general test of the encoders:For Alt-Azimuth...

My Celestron mount slews in the wrong direction. Is this an encoder prob...

It could be an encoder problem. The encoder is a light-emitting diode (LED) device that measures how much the motor has turned. Try this general test of the encoders:For Alt-Azimuth...

How accurate is my Advanced Series GT mount's alignment?

Go to Scope Setup> Mount Settings to find out. Cone Value gives the cone error found once calibration stars were added to the alignment. It should be less than ½-degree....

How accurate is my Advanced Series GT mount's alignment?

Go to Scope Setup> Mount Settings to find out. Cone Value gives the cone error found once calibration stars were added to the alignment. It should be less than ½-degree....